Tarasginia

About

Sirenophila is a genus of rock-dwelling crustose lichens in the subfamily Teloschistoideae of the family Teloschistaceae. It comprises six species with an Australasian distribution. These lichens form crusty growths on rocks in coastal areas, with some species having distinct lobes at the edges while others have irregular margins. The genus is endemic to the Australasian region, where species colonise seashore rocks exposed to maritime conditions. Like many members of the Teloschistaceae, some Sirenophila species contain orange anthraquinone pigments.

Summary from Wikipedia